Thermostat



FIG. 1 is a front perspective view of a thermostat showing my new design.

FIG. 2 is a front elevation view thereof.

FIG. 3 is a top plan view thereof.

FIG. 4 is a bottom plan view thereof.

FIG. 5 is left side elevation view thereof. The right side is a mirror image of FIG. 5; and,

FIG. 6 is a rear elevation view thereof.

The broken lines depict portions of the thermostat that form no part of the claimed design. 

CLAIM The ornamental design for a thermostat, as shown and described. 